Although Toadie (Ryan Moloney) was very dismissive of the idea last time we saw him, he finally relents next week and decides to pay a private investigator to look into the mystery.

Secretive Toadie decides not to tell Sonya anything about the Dee situation, partly because they have so many other dramas going on at the moment.

2017 kicks off with Sonya dropping the bombshell that she's pregnant following their recent surrogacy agreement, forcing her to brace herself for the reaction of Toadie, Steph and Mark.

When Toadie is later plagued by bad dreams involving Dee, Sonya wrongly assumes that the surrogacy is the reason for his disturbed sleeps.

Sonya tries to make things better by planning a dinner for everyone involved to discuss where they're at, but trouble brews when she goes rooting in the living room drawers for some research she's done on surrogacy.

Pulling out a brown envelope, Sonya is shellshocked to instead find the secret photo of Dee, along with Toadie's file of information on his late wife. He really should have found a better hiding place...

Backed into a corner - and with Steph and Mark watching on - will Toadie reveal why he's started paying someone to investigate Dee?

Speaking at the time, Madeleine told Digital Spy: "It's very rare that an actor gets to revisit a character they've breathed life into after 13 years, especially one that has been so loved as Dee Bliss was.

"It feels like coming full circle. Neighbours was where I took my first tentative steps into the film and TV industry. Since then, I've been lucky to have a wonderful career over 13 years and I've got a family. Now here I am, back again on Ramsay Street."

Neighbours airs these scenes on Tuesday, January 10 at 1.45pm and 5.30pm on Channel 5.